#!/usr/bin/env bash

MON=1 # Primary monitor
DP="0x0f"
HDMI1="0x11"
HDMI2="0x12"

###
CURR_INPUT=""

function toggle {
	get_input
	if [[ ${CURR_INPUT} == ${DP} ]]; then
		set_input ${HDMI1}
	elif [[ ${CURR_INPUT} == ${HDMI1} ]]; then
		set_input ${DP}
	fi
}

function set_input {
	ddcutil setvcp -d ${MON} 60 ${1}
}

function get_input {
	CURR_INPUT="0$(ddcutil getvcp -d ${MON} 60 -t | cut -d' ' -f4)"
}

if [ $@ ]; then
	for arg in "$@"; do
		shift;
		case $arg in
			"--dp") set_input ${DP} ;;
			"--hdmi1") set_input ${HDMI1} ;;
			"--hdmi2") set_input ${HDMI2} ;;
			"-h") echo "Usage: $0 [--dp|--hdmi1|--hdmi2]" ;;
		esac
	done
else
	toggle
fi